package com.bnz.util;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.IOException;
import java.io.InputStream;

public class MybatisUtil {
    // 1. 得到SqlSessionFactory
    private static SqlSessionFactory getSqlSessionFactory() throws IOException {
        String resource = "mybatis/mybatis-config.xml";
        InputStream inputStream = Resources.getResourceAsStream(resource);
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        return sqlSessionFactory;
    }

    // 2. 得到SqlSession,相当于jdbc里面的连接
    public static SqlSession getSqlSession(boolean isAutoCommit){
        try {
            //2.1 得到SqlSessionFactory对象
            SqlSessionFactory sqlSessionFactory = getSqlSessionFactory();
            //2.2 得到得到SqlSession对象
            return sqlSessionFactory.openSession(isAutoCommit);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }
}
